Rotary roller pump



July 22, 1947- R. E. E. JE ssoP ROTARY ROLLER rum Filed June 26, 1944 INVENTOR Robe/'7 Edison Edouard Jessop ATTORNEYS Patented July 22, 1947 ROTARY ROLLER rum Robert Edison Edouard Jessop. West Vancouver,

- British Columbia, Canada Application June 26, 1944, Serial No. 542,086 1 Claim. (01. 103- 136) This invention relates to improvements in a roller pump such as may be used for pumping various kinds of liquids including chemicals or hot water circulation, and for other purposes for which a pump ofthis type is used, and as an alternative if the device is supplied with liquid under pressure it may be used as a source of power.

The objects of the invention are to provide a pump which is silent in operation, may be run in either direction and efliciently perform the functions required of it.

Further objects of the invention are to reduce wear between innumerable parts of the pump and which will be liquid tight. Further objects of the invention are to enable the pump to be selflubrlcating and to be capable of operation in any position, either vertical or horizontal or at an angle.

According to the present invention the pump is constructed with a suitable casing and a rotor having a plurality of peripheral recesses designed to receive the rollers, which may be formed of resilient material such as rubber and which are capable of moving inwardly and outwardly towards the wall of the casing which is so shaped as to provide pressure chambers between the rotor and the wall, all as hereinbeiore more particularly set forth in the accompanying specification and drawings.

In the drawings Figure 1 is a side elevation of the pump with an end cover removed.

Figure 2 is a sectional elevation taken on the Q line 2-2 of Fig. 1.

Figure 3 is a perspective view of the pump.

In the drawings like characters'represent corresponding parts in all the figures.

Referring to the drawings A indicates a cylindrical rotor having a plurality of equally spaced peripheral recesses 10, each designed to accommodate a roller l I with freedom 0! movement inwardly and outwardly in substantially radial direction, the depth of the reces sjeing slightly less than the diameter of the roller.

the side of the rotor. Inlet ports 20 and 2i :01- the fluid are provided at the top and bottom of the casing opening into the chamber ll. Outlet ports 22 and 23 are provided in appropriate position adjacent to the inlet ports. The two inlet ports 20 and 2| are connected by a passage 24 while the outlet ports are connected by a passage 25, both passages being suitably formed in the anti-friction bearing material 33 of any suitable composition.

Any suitable number of rollers ll may be provided in the pump. These rollers are formed of suitable resilient material such as a rubber composition. although for certain uses they may be made of plastic or metal. Where the rollers are made or hard material it will be found convenient to line the body of the pump and the recesses Ill with rubber.

It will be seen that as the rotor A is turned in the direction of the arrow in Fig. 1, each roller under the action of centrifugal force tends to roll around the inside face of the casing, thus creating suction on the inlet port 22 and forcing theliquid out through the exhaust port 23. The pump is double acting since the inlet port 20 and exhaust port 23 are connected to the similar ports 2| and 22, thus balancing the rotor and substantially causing the shaft to float. Where resilient rollers are employed they will have the advantage of not cutting or scoring the pump and the arrangement of the rollers on the periphery of the rotor will give an effective distribution of the impulses which will result in smooth operation of the I pump. If it is desired to operate the device as a power generator, fluid under pressure may be introduced through the inlet ports 20 and 2 I, the pressure of which, acting on the rollers. will impart rotary movement to the rotor and shaft carried thereby. I l

The casing will be constructed of any suitable material such as metal or plastic or combined metal and plastic and may be arranged in any position, either vertical, horizontal or at an angle.

It will be observed that the pump will work equally well when driven in either direction.

The outside contour of the casing may be of any convenient form.

Various modifications may be made in this invention without departing from the spirit thereof or the scope of the claim, and therefore, the exact form shown is to be taken as illustrative only and not in a limiting sense, and it is desired that only such limitations shall be placed thereon as are disclosed in the prior art or are set'i'orth in the accompanying claim.

What I claim as my invention is:

A rotary pump comprising in combination a cylindrical rotor having a plurality of peripheral recesses therein, a rubber composition roller in each recess with fluid freedom of movement inwardly and outwardly, the recesses in the periphery of the rotor being slightly less in depth than the diameter of the rollers, a shaft connected to the rotor, a casing having an elliptical inner wall enclosing the rotor spaced therefrom all the way around and defining therewith two pressure chambers, the walls of said chambers being engaged by the rollers under centrifugal force when the rotor is turned, said casing being formed with 4 an inlet port at the inlet end of each pressure chamber and an outlet port in the other end of each pressure chamber, the two inlet ports and two outlet ports being respectively connected by passageways in the casing.

ROBERT EDISON EDOUARD JESSOP.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

